Haha I loved it too so looked into it:
In December 1942 U.S. Army Chief of Staff George Marshall, acting on a suggestion from General Dwight Eisenhower, sent identical fifty-inch, 750-pound globes to both Roosevelt and Churchill as Christmas presents. It was especially useful for coordinating strategy and gauging relative distances over water, a crucial factor in allocating scarce shipping resources while planning grand strategy.
The giant globe—which was believed to be the largest and most accurate printed globe of its time— took over 50 geographers, cartographers, and draftsmen from the Geographic Division of the Office of Strategic Services to compile the information to make the globe. The globe was constructed by the Weber Costello Company of Chicago Heights, Illinois.
At 1/10,000,000th the size of the earth, it was large enough to contain over 17,000 place names. The globe consists of two wooden interlocking halves pasted over with printed paper gores. The globe rests on a series of rubber balls set within a steel stand, which allowed the President and Prime Minister to rotate it in any direction.